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Ursa Astronomical Association

A fireball at night, brighter than a full moon - 9.4.2016 at 23.32 Seinäjoki Observation number 51373

Visibility V / V

The intention was to go to the Björköby harbor area on Mustasaari to photograph the starry sky. The weather forecast promised the clouds would stay far away on the Swedish side all night. Spring was already so far away that the last dark nights began to be at hand. The evening went by filming the sunset and waiting for the dark. The clouds growing on the sea were moving towards the mainland and it seemed that the starry sky would not be visible at least as much as one would like. The cloud forecast confirmed this. Camera equipment in the car and a return trip to Seinäjoki, a mandatory stop on the Raippaluoto bridge, where you have to shoot in the dark on every trip.

On the way, annoyingly, the trip that had gone wrong had to think of something along the way that would be worth stopping. Upon reaching Seinäjoki, the sky was completely clear and the night began to darken so that the stars were visible. The last places before the light pollution of the city is Paukaneva with good elongated trees and walking there even in the dark is effortless. The camera on the tripod and wide angle closed, the backpack gets left in the car, which was a mistake, the headlamp warned of empty batteries already on the way, spare batteries of course in the backpack.

Along the elongated trees there is a bird-watching platform which is on the edge of the neva and offers a view to the north where there is not too much light pollution, the city is left behind. The skyline still echoed in the wake of the sunset and the intention was to wait if the sky darkened enough for the starry sky to be at its best. It took time to orient the camera and take test shots, in the dark it was challenging, the headlamp went out permanently. That is, testing, screen checking, fixes and more testing. During one such 25-second test frame, a bright fireball in the images was recorded that flashed Four Tones in green and went out before the horizon, illuminating for perhaps 2 to 3 seconds. Immediately check the camera screen for timing. You could see on the small screen that the button went. The problem was that the camera was focused to infinity, meaning the stars were sharp but the longitudinal trees and railings at the front were not. Without waving the camera, one had to focus on the wooden parts, increasing the exposure. With the help of Lightroom and Photoshop, there is a combined image of these two frames in which the exposure and colors have been corrected, the moon has been removed at every edge of the forest, partly disturbingly behind the trees.

At home, the finished image on the computer screen looked good and the shooting trip got at least one successful picture that makes the trip worth the effort.

More photos:

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Additional information
  • Accuracy of the given observation time?
    • 2 min difference possible
  • How long time did you see the fireball fly in the sky?
    • 2 seconds
  • How the flight of the fireball ended?
    • The fireball disappeared suddenly
  • In which direction the fireball disappeared out of sight?
    • North
  • In which altitude the bolide disappeared from your sight?
    • Low near the horizon
  • Brightness of the fireball
    • A fireball at night, brighter than a full moon
Technical information

Frame Canon EOS 6D, Lens Tamron SP 24-70mm F / 2.8 Di VC USD, Tripod for Chip R-4203 + K-40X ISO1600, f / 2.8, 25sec

Comments: 10 pcs
Pentti Arpalahti - 11.4.2016 at 16.56 Report this

Hieno tunnelma kuvassa! Tämmöisen otoksen jälkeen ei enää muistakaan niitä monia nopealiikkeisten pilvilauttojen pilaamia havaintoretkiä.

Tapio Lahtinen - 11.4.2016 at 18.24 Report this

Hieno otos.

Heidi Rikala - 11.4.2016 at 18.52 Report this

Hienot kuvat ja mahtava tunnelma ja hyvää tuuria, että tulipallo on piirtänyt viirunsa - ison sellaisen , kuvaan. Onnea!

Esko Lyytinen - 11.4.2016 at 19.23 Report this

Tosi hienoa !

Tästä on kokotaivaskamerakuvat etelä Ruotsista hyvin etäältä ja nekin melko lailla samasta suunnasta. Tämä tarkentanee huomattavasti !


Antti Rinne - 11.4.2016 at 20.22 Report this

Ooh! Onnittelut!

Mikko Peussa - 11.4.2016 at 22.11 Report this

Hienosti napsahtunut ruutuun upeassa maisemassa! Kuunsirppi on hyvä kuvassa mukana.

Harri Aho - 12.4.2016 at 14.48 Report this

Kiitokset kaikille kommenteista!

Jari Luomanen - 12.4.2016 at 14.59 Report this

Hienosti kyllä napsahti ruutuun! Itse olen valotellut joitakin ruutuja yötaivasta, mutta kun ei osu niin ei osu. :-D

Harri Aho - 14.4.2016 at 17.28 Report this

Onko kyseisestä tulipallosta tietoa onko meteoriitti vai avaruusromua?

Esko Lyytinen - 14.4.2016 at 21.39 Report this

Luonnon meteoroidi/meteoriitti on ihan ilmeisesti. Avaruusromu tulee melkein aina hyvin loivasti ilmakehään. Ja myös seuraava nopeuskommentti kertoo asian.

Tästä on ollut hyvin vaikea saada havaintoa joka kertoisi tulonopeuden, Viimeisin tieto Ruotsin puolelta (kamerahavainnoista, joissa niissäkin ongelmia tältä kannalta)) kertoo että olisi luokkaa 30 km/s. Ja tällöin se on ainakin melkein palanut loppuun. Jos jotakin on jäänyt jäljelle niin hyvin pientä.


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